A:5
B:10
C:13
D:4
下列各函数①y=kx;②y=k2+1x;③y=35x;④y=4x+1;⑤y=12x;⑥y=1x﹣3;⑦y=4x2和⑧y=3x﹣1中,是y关于x的反比例函数的有:____(填序号).
----The radio says that a new typhoon (台风) is coming.
---- Really, All the ____ (渔民)on the sea must come back.
下列工厂之间存在工序上联系的工业是( )